package reflect;

import java.lang.reflect.Method;
import java.lang.reflect.ParameterizedType;
import java.lang.reflect.Type;
import java.util.List;
import java.util.Map;

public class Test08 {
    public void test01(Map<String,User> map, List<User> list){
        System.out.println("test01");
    }
    public Map<String,User> test02(){
        System.out.println("test02");
        return null;
    }
    public static void main(String[] args) throws NoSuchMethodException {
        Method method = Test08.class.getMethod("test01", Map.class, List.class);

        Type[] genericParameterTypes=method.getGenericParameterTypes();
        for(Type genericParameterType:genericParameterTypes){
            System.out.println("##"+genericParameterType);
            if(genericParameterType instanceof ParameterizedType){
                Type[] actualTypeArguments = ((ParameterizedType) genericParameterType).getActualTypeArguments();
                for (Type actualTypeArgument : actualTypeArguments) {
                    System.out.println(actualTypeArgument);
                }
            }
        }
        System.out.println("===========");
        method=Test08.class.getMethod("test02");
        Type genericReturnType=method.getGenericReturnType();
        System.out.println("##"+genericReturnType);
        if(genericReturnType instanceof ParameterizedType){
            Type[] actualTypeArguments = ((ParameterizedType) genericReturnType).getActualTypeArguments();
            for (Type actualTypeArgument : actualTypeArguments) {
                System.out.println(actualTypeArgument);
            }
        }
    }
}
//##java.util.Map<java.lang.String, reflect.User>
//class java.lang.String
//class reflect.User
//##java.util.List<reflect.User>
//class reflect.User
//===========
//##java.util.Map<java.lang.String, reflect.User>
//class java.lang.String
//class reflect.User